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Lina20 [59]
3 years ago
8

I don’t get this- it’s due tmrw

Chemistry
1 answer:
Simora [160]3 years ago
7 0
Insulate the cup, use a lid
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Hey guys!
melamori03 [73]

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Hope this helps you take off anything you don't want or anything you don't need

7 0
3 years ago
1.) What are the two broad categories that elements can be divided into?
hoa [83]

Answer:

1) Metals and nonmentals

2) Elements: Oxygen (O_{2} \\) , Nitrogen (N_{2}

3) Compounds: Carbon Dioxide CO_{2}, Methane CH_{4}, Nitrogen DioxideNO_{2}

Explanation:

5 0
4 years ago
Acetic acid is a weak acid with a pKa of 4.76. What is the concentration of acetate in a buffer solution of 0.2M at pH 4.9. Give
Ghella [55]

Answer:

[base]=0.28M

Explanation:

Hello,

In this case, by using the Henderson-Hasselbach equation one can compute the concentration of acetate, which acts as the base, as shown below:

pH=pKa+log(\frac{[base]}{[acid]} )\\\\\frac{[base]}{[acid]}=10^{pH-pKa}\\\\\frac{[base]}{[acid]}=10^{4.9-4.76}\\\\\frac{[base]}{[acid]}=1.38\\\\

[base]=1.38[acid]=1.38*0.20M=0.28M

Regards.

6 0
3 years ago
How do you separate iron and steel from the industrial waste
Volgvan

Iron and steel are magnetic in nature. So you can use a magnet to separate them

5 0
3 years ago
Which is true about covalent compounds?
Anton [14]
Covalent compounds have a low boiling point. All the other answers apply to ionic compounds.
3 0
3 years ago
Read 2 more answers
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